Favreau, who made a splash with his Iron Man films in previous years at the annual pop-culture convention, had already told the Hero Complex blog that Cowboys & Aliens would make its debut before the faithful.

“Warner [Bros.’] main studio operation is bringing nothing” to Comic-Con this year, the paper reported. “Ditto Disney and DreamWorks. The Weinstein Company, a perennial presence, will also sit this one out. Even Marvel Entertainment, whose panel for The Avengers was a highlight of Comic-Con 2010, is on the fence about whether it will mount a major presentation.”

Cowboys & Aliens stars Daniel Craig and Harrison Ford as 1870s tough guys who deal with an extraterrestrial invasion. Based on the 2006 graphic novel created by Scott Mitchell Rosenberg, the movie opens July 29. While you wait, check out the extended spot above, which aired during Spike TV’s Guys Choice Awards.